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Finding the Fourth Proportional to 92,929.59, 128,242.48 and 50,487.75

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Solution

The fourth proportional to 92,929.59, 128,242.48 and 50,487.75 is: 69,672.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,929.59 : 128,242.48 = 50,487.75 : x
  2. Step 2: Convert to fraction form
    92,929.59/128,242.48 = 50,487.75/x
  3. Step 3: Cross multiply
    92,929.59x = 128,242.48 × 50,487.75
  4. Step 4: Simplify right side
    92,929.59x = 6,474,674,269.62
  5. Step 5: Solve for x
    x = 6,474,674,269.62/92,929.59
  6. Step 6: Final answer
    x = 69,672.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.